题为基于CSD编码的FIR数字滤波器设计.该滤波器具有线性相位,系数减半.采用VHDL语言编写.是我们EDA课程的作业,得了优.希望对大家有用-Entitled based on CSD code FIR digital filter design. That the filters have linear phase, coefficient half. Using VHDL language. Is the EDA program operations, got excellent. Hop

产生相差90°的AB相脉冲，并且模拟AB相位的超前或滞后，用于ABZ编码器信号的分析(The AB phase pulse with a difference of 90 degrees is produced and the AB phase is simulated forward or lagging, for the analysis of the signal of the ABZ encoder)